Correlações para determinação prévia do índice de compressão em solos brasileiros
In Geotechnical Engineering there are uncertainties inherent to the soil due to its nature, considering that its composition is the result of non-homogeneous and highly variable matter. In addition, when subjected to loads, such uncertainties present in the preliminary design, design and during t...
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| Formato: | bachelorThesis |
| Idioma: | pt_BR |
| Publicado em: |
Universidade Federal do Rio Grande do Norte
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| Endereço do item: | https://repositorio.ufrn.br/handle/123456789/48909 |
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| Resumo: | In Geotechnical Engineering there are uncertainties inherent to the soil due to its nature,
considering that its composition is the result of non-homogeneous and highly variable matter.
In addition, when subjected to loads, such uncertainties present in the preliminary design,
design and during the execution of the work are intensified, as loads added to the soil influence
the interaction between the particles that constitute it, and consequently, generate changes in its
state of tensions. The alterations that the different types of loading cause in the soils originate
the densification process, which can be understood as a compression of the saturated soil over
a certain time, causing a deformation by the expulsion of water from its voids. This process
triggers settlements in buildings and landfills, these in turn are known in the geotechnical
environment for their complexity. For the analysis of settlements, a geotechnical investigation
in the field and later in the laboratory is necessary, aiming at the knowledge of the parameters
of the soil in question. The densification process occurs slowly and obtaining the results of the
densification test (edometric) can take long periods of time, however, in technical feasibility
studies, quick responses are required for project definitions and directions. For this, the present
work aims to present solutions for preliminary projects using linear correlations in order to
obtain the parameters of a more complex and expensive test (edometric) through simpler test
parameters, in order to achieve quick responses and with good approximation. Through the
analysis of 32 soil samples of brazilian origin, linear correlations were developed for the
previous determination of the compression index (cc
) of the edometric densification test by means of parameters of other geotechnical tests of simpler realization. As a result of the
analysis, linear correlation equations were obtained (used by means of an evaluation of the
precision, in view of its empirical nature), in addition to the presentation of existing correlations
studied by other authors. |
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